CN107059541B - A kind of road ice-melt snow fever mat and its pavement construction method - Google Patents
A kind of road ice-melt snow fever mat and its pavement construction method Download PDFInfo
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- CN107059541B CN107059541B CN201710273886.0A CN201710273886A CN107059541B CN 107059541 B CN107059541 B CN 107059541B CN 201710273886 A CN201710273886 A CN 201710273886A CN 107059541 B CN107059541 B CN 107059541B
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- mat
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- grizzly bar
- fever
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
- E01C11/265—Embedded electrical heating elements ; Mounting thereof
Abstract
The present invention provides a kind of ice-melts of road to avenge fever mat and its pavement construction method, and fever mat is placed on the interface of layer and middle surface layer；The mat that generates heat is pre-formed by heat-insulated grid and heating cable, can be divided into straight way mat and bend mat according to the setting shape of heat-insulated grid；Mated formation power using fever mat interlayer entire area occupancy and scene, the setting parameter of the heat-insulated grid of synchronous adjustment can effectively enhance layer stability, and the grizzly bar by heating cable along heat-insulated grid is arranged, heating cable heat utilization ratio can be made to maximize.In construction method of the present invention, by being laid with track, it can effectively avoid fever mat from being subject to crushing in the construction process, be pullled the destruction for rolling or elapsing sliding；By spraying emulsified asphalt twice, the fixed fever mat of bail can effectively increase the layer stability for melting ice-snow road, reduce road damage, extend the service life for melting ice and snow road according to measures such as fever mat interlayer area occupancy setting rolling layers.
Description
Technical field
The invention belongs to urban road and diaster prevention and control field, more specifically a kind of road fever mat and its road surface
Construction method melts ice and snow quickly by heating for the road surface to accumulated snow or icing, and is increased by various working measures
The cable's contacting forces of rope-race line structure while playing ice-melt snow surface feature, reduce the destruction to original path as far as possible and make
With.
Background technique
The accumulated snow on winter road surface and icing cause inconvenience to people's trip, while giving the coast is clear and traffic safety band
To seriously affect.In ice and snow weather, road surface adhesive ability is substantially reduced, and the dynamic property and safety to vehicle driving are extremely
It is unfavorable.Existing common pavement snow melting de-icing method mainly includes manually or mechanically removing method, spreading deicing salt etc., and snow melt effect is all
It is undesirable, and snow melt can only be carried out again in the case where there is ice and snow road, it cannot be prevented before road surface in ice and snow product.
Phase early 1990s, external electroheat technology introduce the country, heating cable are embedded under road surface, is produced after energization
Heat amount can eliminate the accumulated snow on road surface and change ice.But to some main problems of engineer application, include how to carry out practical work
How journey design, avoid the delamination failure etc. of cable road pavement structure itself from failing to provide good solution.
There are mainly two types of for the paving mode of heating cable more mature at present: one is cuttings, by cutting side
Carbon fiber line is embedded in inside middle surface layer by formula, does not influence the construction of upper layer decking and rolling, and the influence to interlaminar bonding is smaller,
But what the depth of cutting and width needed to be determined according to selected carbon fiber heating line specification, and destroy middle surface layer itself
Structure increases the workflow of construction, can not be suitable for a variety of type of cable；Another kind is formed into the progress of heating cable grid
It is laid with, but the presence of heating cable and grid directly affects interlaminar bonding, be easy to cause the passage of asphalt surface course, gathers around packet,
Road Service Life is shortened, most of prefabricated grid is made of high-strength non-insulated material in the market, ties up for convenience of construction
It pricks, heating cable is placed at the space of grid more, carries out snakelike arrangement, and heat transfer is quite dispersed, and time-consuming, energy consumption is big.
These existing method cables are not easy to be laid with, and the destruction such as cable displacement can occur in work progress in advance；Meanwhile pavement structure point
Layer is excessive, influences the overall stability and interlayer mechanical strength on road surface, especially may under the situation that heavy goods vehicles are brought to a halt
It is subjected to displacement road surface interlayer, greatly influence service life of road surface.
Summary of the invention
The present invention be to avoid above-mentioned deficiency of the prior art, propose a kind of road ice-melt snow fever mat and its
Pavement construction method extends the service life for melting ice and snow road to improve the thermal efficiency and enhance layer stability.
The present invention adopts the following technical scheme that in order to solve the technical problem
Ice-melt snow fever mat in road of the present invention is structurally characterized in that: the fever mat is surface layer in the road of mating formation
On, it is roadbase under surface layer in the road, is road foundation under the roadbase, is on the fever mat
Road upper layer, the fever mat is to be laid on heating cable on the heat-insulated grid by the setting of road surface flat shape, and benefit
It is fixedly connected with cassette tape with heat-insulated grid, constitutes prefabricated profiled integrated member；The heat-insulated grid is made of heat-barrier material, benefit
Fever mat is made as being used to mat formation in advance the linear straight way mat in straight line road surface with heat-insulated grid setting shape, and
Mating formation in curved road surface is in the bend mat for fanning ring；
The straight way mat is to set heat-insulated grid to the heat-insulated grid of rectangle, and heating cable is pressed on the heat-insulated grid of rectangle
Equidistant snakelike arrangement is the snakelike heating cable of straight way；The bend mat is that heat-insulated grid is arranged by the radian of curved road surface
To fan the heat-insulated grid of ring, heating cable presses snakelike arrangement on the fan heat-insulated grid of ring, also, between adjacent twice heating cable
Distance is gradually big from the curve inner side of curved road surface towards bend outside, forms the fan krait shape heating cable by fan ring arrangement；
The heat-insulated grid of rectangle is made of heat-insulated grizzly bar, the transverse direction being arranged including rectangular shaped rim grizzly bar, equidistant interval
Grizzly bar, and the longitudinal grizzly bar being connected between adjacent transverse grizzly bar；The transverse direction grizzly bar is perpendicular to direction of traffic, the longitudinal direction
Grizzly bar is parallel to direction of traffic；Heating cable mats formation to be formed on the rectangular shaped rim grizzly bar and adjacent twice transverse direction grizzly bar
The wide " u "-shaped region of oral area and bottom；It is in the staggered row on lateral position of longitudinal grizzly bar in adjacent " u "-shaped region
Column are parallel to direction of traffic with longitudinal characterize, laterally to characterize perpendicular to direction of traffic；
The heat-insulated grid of the fan ring be made of heat-insulated grizzly bar, including fan ring frame grizzly bar, in penetrating the equally distributed diameter of shape
To grizzly bar, and the tangential grizzly bar being connected between adjacent radial grizzly bar, heating cable is in fan ring frame grizzly bar and adjacent
Mat formation to form the not wide " u "-shaped region in oral area and bottom on twice radial direction grizzly bar；The tangential grizzly bar is along the string side of fan ring
To setting, the tangential grizzly bar being in adjacent " u "-shaped region interlocks along the radially position of fan ring.
Road of the present invention is lain also in the design feature that fever mat is avenged in ice-melt:
Spacing a between adjacent transverse grizzly bar is set1Are as follows:
PxFor the linear heat generation rate of heating cable, unit W/m,
P is that the unit area of the straight way mat of setting is mated formation power, unit W/m2；
Meanwhile spacing a is limited by following requirement1Maximum value: according to local climate and environment temperature, P is taken as 300~
500W/m2, by PxIt is taken as 25~30W/m, obtains a by formula (1)1Maximum value be 0.05~0.1m；And by between following requirement restriction
Away from a1Minimum value: take a1Be 2~8 times of heating cable diameter for half diameter of a circle D at cable folding, D, heating cable it is straight
Diameter is taken as 0.005~0.01m, then a1Minimum value be 0.01~0.08m；
Accordingly, a is set1Value be 0.05~0.08m.
Road of the present invention is lain also in the design feature that fever mat is avenged in ice-melt:
The interlayer entire area occupancy S of straight way matm1It is characterized by formula (2):
In formula (2), A is the longitudinal length of the heat-insulated grid of rectangle, and B is the lateral length of the heat-insulated grid of rectangle, d1For rectangle
The width of heat-insulated grizzly bar, takes n in heat-insulated grid1For the radical of longitudinal grizzly bar in each " u "-shaped region；
By d1It is taken as 0.006~0.01m, if n10 is taken, then is calculated according to formula (2) and obtains Sm1It is 9.3%~23%；Foundation
Experiment obtains, as interlayer entire area occupancy Sm1When being 20%, layer stability is best；So taking n1Value formula (2) in
Interlayer entire area occupancy Sm1Value be 18~23%.
Bend mat, the interlayer entire area occupancy S of bend matm2It is characterized by formula (3):
In formula (3), a2For the spacing being between the adjacent twice radial direction grizzly bar in outer arc one end, C is the fan heat-insulated grid of ring
Outer arc arc length, D are the inner arc arc length for fanning the heat-insulated grid of ring, R1For outer arc radius, R2For interior arc radius, θ is the fan heat-insulated grid of ring
Central angle, r=R1-R2, d2For the width of heat-insulated grizzly bar in the fan heat-insulated grid of ring, n2For the tangential grizzly bar in each " u "-shaped region
Radical；Take n2Value formula (3) in occupancy Sm2Value be 18~23%.
The characteristics of road of the present invention construction method of ice-melt snow fever mat, is: by straight way mat and bend mat by half range
Width of roadway is configured, in the road that laying is completed in surface layer, for any side half range road surface as follows into
Row construction:
Step 1: cleaning surface layer floating dust in road, and keep top surface aggregate particle surface exposed, then use emulsified asphalt
Sprinkling wagon is according to 0.2~0.4L/m2Dosage emulsified asphalt is uniformly sprayed in surface layer in the road, form first of emulsified asphalt
Face；
Step 2: on first of emulsified asphalt face, mating formation piecewise the mat that generates heat along a direction, and connect electricity
Cable completes mating formation for target phase half range road surface fever mat；
Step 3: manually bail is squeezed on longitudinal grizzly bar and tangential grizzly bar, by the fixed surface layer in the road of fever mat
On；
Step 4: on fever mat, the track of direction of traffic, institute are parallel to using asphalt Manual two
It is identical as the material of upper layer to state asphalt；The track is carried out according to the wheel spacing and tyre width of rubber tire paver
It is laid with, the rubber tire paver in operation is to orbit, and the thickness of track is not less than the diameter of heating cable, to avoid glue
It takes turns paver and damages heating cable；
Step 5: being orbited using emulsified asphalt sprinkling wagon, and according to 0.2~0.4L/m2Dosage for mating formation
There is the secondary sprinkling emulsified asphalt of surface layer in the road of fever mat, forms second emulsified asphalt face；
Step 6: dumper being pushed using rubber tire paver, and rubber tire paver and dumper are held on track and transport
Row, using rubber tire paver conveying synchronous with dumper and the asphalt that paves, then presses the asphalt to pave
It is real to form road upper layer；The compacting includes the first pressing successively carried out, multiple pressure and final pressure.
The characteristics of road of the present invention construction method of ice-melt snow fever mat, lies also in: on longitudinal ramp, for road
The asphalt of upper layer paving and being compacted, and is to carry out conveying by the direction from eminence toward lower, pave and be compacted.
The characteristics of road of the present invention construction method of ice-melt snow fever mat, lies also in: for longitudinal ramp:
If the gradient in longitudinal ramp, less than 3%, after completing the paving of track, emulsified asphalt truck spreader, rubber tire pave
Machine and transport vehicle direct plunge into paving operation, and the speed for controlling rubber tire paver is 1~3m/min；
If the gradient in longitudinal ramp, first will using hand-held road roller after completing the paving of track in 3%-6%
Track compacting, then, emulsified asphalt truck spreader, rubber tire paver and transport vehicle put into paving operation, and control rubber tire paver
Speed be 3~5m/min.
The characteristics of road of the present invention construction method of ice-melt snow fever mat, lies also in: in multiple pressure,
1-2 times is rolled by the travel speed static pressure no more than 2km/h using the pneumatic-tired rollers of 25t~30t first, then
It is pressed travel speed vibroroller cmpacting x times no more than 2km/h using vibrated roller；
The rolling layer x of vibrated roller is set as follows:
Expression formula such as formula (4): y=k-a × exp (- bx) (4) is established by indoor real experiment
Y is the upper surface of real-time detection acquisition layer Compaction of Asphalt Mixture, and k is the setting of upper layer Compaction of Asphalt Mixture
Value, k value are 96, kminInitial compactness when paving, k are completed for upper layermaxBe after vibrated roller rolls 18 times on
The compactness of surface layer, a and b are coefficient, and are had: a=k-kmin, b=(k-kmin)/k
It is obtained through experiment:
Work as Sm1Or Sm2When less than 10%, a=21.78, b=0.17, then the compactness y reached according to setting1, utilize formula
(5) the rolling layer x for obtaining vibrated roller is calculated1:
y1=96-21.78 × exp (- 0.17x1) (5)
Work as Sm1Or Sm2When being 10%~14%, a=20.75, b=0.15, then the compactness y reached according to setting2, utilize
Formula (6) calculates the rolling layer x for obtaining vibrated roller2:
y2=96-20.75 × exp (- 0.15x2) (6)
Work as Sm1Or Sm2When being 15%~20%, a=20, b=0.13, then the compactness y reached according to setting3, utilize formula
(7) the rolling layer x for obtaining vibrated roller is calculated3:
y3=96-20 × exp (- 0.13x3) (7)。
Compared with the prior art, the invention has the advantages that:
1, present invention fever mat is precast construction, can greatly improve the efficiency that paves of construction site；Using heat-insulated material
The heat that heat-insulated grid made of expecting can effectively obstruct heating cable transmits downwards, improves heat utilization ratio.
2, mated formation the crooked process radius of power and cable according to scene units area, adjusted between heat-insulated grid transverse direction grid
Away from more targeted to environment and material；It is required according to the control of heat-insulated grid interlayer area occupied rate, adjusts longitudinal grizzly bar
Or the radical of tangential grizzly bar, it is not only able to satisfy engine request, but also energy road pavement plays the effect of reinforcement.
3, construction method of the present invention is by being laid with track, emulsified asphalt truck spreader, dumper and the equal edge of rubber tire paver
Rail running, forbid using crawler-type paver；Conveying booth is carried out according to the direction from eminence toward lower on longitudinal ramp
Paving, is rolled along vehicle heading；Fever mat can be effectively prevented to occur being subject to crushing in the construction process, pullled volume
Rise, passage sliding etc. harm, effectively improve the quality and progress of construction.
4, the fixed fever mat of emulsified asphalt, bail is sprayed in construction method of the present invention in two times, according to fever mat layer
Between area occupancy Sm1Or Sm2The measures such as rolling layer are set, keeps fever mat and the contact of upper and lower surface layer more stable, has
Effect increases the road layer stability of fever mat, reduces road damage, extends the service life for melting ice and snow road.
Detailed description of the invention
Fig. 1 is road structure schematic cross-sectional view involved in the present invention；
Fig. 2 is straight way mat structural schematic diagram in the present invention；
Fig. 3 is bend mat structural schematic diagram in the present invention；
Fig. 4 is the heat-insulated cell structure schematic diagram of straight way mat in the present invention；
Fig. 5 is the heat-insulated cell structure schematic diagram of bend mat in the present invention；
Fig. 6 is construction method schematic diagram in the present invention；
Figure label: 1 road upper layer, 2 fever mats, surface layer in 3 roads, 4 roadbases, 5 road foundations, 6a straight way
Snakelike heating cable, 6b fan krait shape heating cable, the heat-insulated grid of 7a rectangle, the 7b fan heat-insulated grid of ring, 8a rectangular shaped rim grizzly bar,
9a transverse direction grizzly bar, the longitudinal direction 10a grizzly bar, 8b fan ring frame grizzly bar, 9b radial direction grizzly bar, the tangential grizzly bar of 10b, 11 cassette tapes, 12 bails, 13
Track, 14 dumpers, 15 rubber tire pavers, 16 road rollers, 17 Intermediate Grays.
Specific embodiment
Referring to Fig. 1, the present embodiment Road fever mat 2 is mated formation in surface layer 3 in the road, in road under surface layer 3
It is road foundation 5 under roadbase 4 for roadbase 4, is road upper layer 1 on the mat 2 that generates heat.
Referring to figs. 2 and 3, fever mat 2 is that heating cable 6 is laid on to the heat-insulated grid being arranged by road surface flat shape
It on 7, and is fixedly connected using cassette tape 11 with heat-insulated grid 7, constitutes prefabricated profiled integrated member；Heat-insulated grid 7 is by heat-insulated material
Material is made, using heat-insulated grid 7 setting shape will generate heat mat 2 in advance be made as being used to mat formation it is linear straight in straight line road surface
Road mat, and the bend mat in fan ring in curved road surface of mating formation.
Referring to fig. 2, straight way mat is to set heat-insulated grid to the heat-insulated grid 7a of rectangle, and heating cable is in the heat-insulated lattice of rectangle
It arranges on grid 7a by equidistantly snakelike as the snakelike heating cable 6a of straight way；Bend mat is the arc by heat-insulated grid by curved road surface
Degree is set as the fan heat-insulated grid 7b of ring, and heating cable presses snakelike arrangement on the fan heat-insulated grid 7b of ring, also, adjacent twice are generated heat
The distance between cable is gradually big from the curve inner side of curved road surface towards bend outside, is formed and is sent out by the fan krait shape of fan ring arrangement
Electric heating cable 6b.
Referring to fig. 4, the heat-insulated grid 7a of rectangle is to be made of heat-insulated grizzly bar, including rectangular shaped rim grizzly bar 8a, equidistant interval are set
The lateral grizzly bar 9a set, and the longitudinal grizzly bar 10a being connected between adjacent transverse grizzly bar；Lateral grizzly bar 9a is perpendicular to driving side
To longitudinal grizzly bar 10a is parallel to direction of traffic；Heating cable is in rectangular shaped rim grizzly bar 8a and adjacent twice transverse direction grizzly bar 9a
On mat formation to form the wide " u "-shaped region of oral area and bottom；Longitudinal grizzly bar 10a in adjacent " u "-shaped region is in transverse direction
It is staggered on position, direction of traffic is parallel to longitudinal characterize, laterally to characterize perpendicular to direction of traffic.It is sent out in the present embodiment
Thermally the structure type of seat greatly reduces itself area of mat structure, effectively increases surface layer in road upper layer and road
Contact area, enhance layer stability.
The structure type of fever mat effectively can dynamically control the area of mat structure itself, a side in the present embodiment
Face can be excessive to avoid the area of mat structure itself, influences layer stability, on the other hand, can adjust longitudinal grizzly bar in real time
Radical with tangential grizzly bar is to reach the optimal value for testing resulting interlayer entire area occupancy.
For road fever mat, the spacing a between adjacent transverse grizzly bar is set1Are as follows:
PxFor the linear heat generation rate of heating cable, unit W/m,
P is that the unit area of the straight way mat of setting is mated formation power, unit W/m2；
Meanwhile spacing a is limited by following requirement1Maximum value: according to local climate and environment temperature, P is taken as 300~
500W/m2, by PxIt is taken as 25~30W/m, obtains a by formula (1)1Maximum value be 0.05~0.1m；And by between following requirement restriction
Away from a1Minimum value: take a1Be 2~8 times of heating cable diameter for half diameter of a circle D at cable folding, D, heating cable it is straight
Diameter is taken as 0.005~0.01m, then a1Minimum value be 0.01~0.08m.
Accordingly, a is set1Value be 0.05~0.08m.
The interlayer entire area occupancy S of straight way mat 2am1It is characterized by formula (2):
In formula (2), A is the longitudinal length of the heat-insulated grid 7a of rectangle, and B is the lateral length of the heat-insulated grid 7a of rectangle, d1For
The width of heat-insulated grizzly bar, takes n in the heat-insulated grid 7a of rectangle1For the radical of longitudinal grizzly bar in each " u "-shaped region；
By d10.006~0.01m is taken, if n10 is taken, then is calculated according to formula (2) and obtains Sm1It is 9.3%~23%；According to real
Acquisition is tested, as interlayer entire area occupancy Sm1When being 20%, layer stability is best；So taking n1Value formula (2) in
Occupancy Sm1Value be 18~23%.
Interlayer entire area occupancy Sm1Or Sm2Road surface interlayer contact intensity is directly affected, according to experiment it is found that working as interlayer
Entire area occupancy Sm1Or Sm2When in 18~23%, interlayer contact maximum intensity.The horizontal shape of straight way mat interval heat grate
The interval a of grid1, longitudinal grid number n1And interlayer entire area occupancy Sm1Or the place of bend mat interval heat grate
Spacing a between the adjacent twice radial direction grizzly bar in outer arc one end2, tangential grizzly bar radical n2And interlayer entire area occupancy
Sm2Mutually restrict.
If by the interval a of horizontal shape grid1With the width d of heat-insulated grizzly bar in the heat-insulated grid of rectangle1Calculated interlayer integral face
Product occupancy Sm1Or the spacing a by being between the adjacent twice radial direction grizzly bar in outer arc one end2With heat-insulated grid in the fan heat-insulated grid of ring
The width d of item2Calculated interlayer entire area occupancy Sm2Meet the interval a that this lateral grid is then taken less than 20%1The place and
Spacing a between the adjacent twice radial direction grizzly bar in outer arc one end2To design spacing, n1And n2Interlayer entire area is enabled to occupy to take
Rate Sm1And Sm2Closest to 20% design radical of the value as longitudinal grizzly bar and tangential grizzly bar.
If by the interval a of horizontal shape grid1With the width d of heat-insulated grizzly bar in the heat-insulated grid of rectangle1Calculated interlayer integral face
Product occupancy Sm1Or the spacing a by being between the adjacent twice radial direction grizzly bar in outer arc one end2With heat-insulated grid in the fan heat-insulated grid of ring
The width d of item2Calculated interlayer entire area occupancy Sm2Greater than 20%, then the interval a of this lateral grid is taken1It is outer with being in
Spacing a between the adjacent twice radial direction grizzly bar in arc one end2To design spacing, n1And n21 is taken to be used as longitudinal grizzly bar and tangential grizzly bar
Design radical.
Referring to Fig. 5, fanning the heat-insulated grid 7b of ring is made of heat-insulated grizzly bar, including fan ring frame grizzly bar 8b, uniform in shape is penetrated
The radial grizzly bar 9b of distribution, and the tangential grizzly bar 10b being connected between adjacent radial grizzly bar, heating cable is in fan ring frame grid
Mat formation to form the not wide " u "-shaped region in oral area and bottom on 8b and adjacent twice radial direction grizzly bar 9b；Tangential grizzly bar 10b
Along the string direction setting of fan ring, the tangential grizzly bar being in adjacent " u "-shaped region interlocks along the radially position of fan ring.
The interlayer entire area occupancy S of bend mat 2bm2It is characterized by formula (3):
In formula (3), a2For the spacing being between the adjacent twice radial direction grizzly bar in outer arc one end, C is the fan heat-insulated grid 7b of ring
Outer arc arc length, D be fan the heat-insulated grid 7b of ring inner arc arc length, R1For outer arc radius, R2For interior arc radius, θ is the fan heat-insulated lattice of ring
The central angle of grid 7b, r=R1-R2, d2For the width of heat-insulated grizzly bar in the fan heat-insulated grid 7b of ring, n2For in each " u "-shaped region
The radical of tangential grizzly bar；Take n2Value, the occupancy S in formula (2)m2Value be 18~23%.
Referring to Fig. 6, the present embodiment Road is with the construction method of fever mat: by straight way mat and bend mat by half range
Width of roadway is configured, and forms half range road surface on road surface with Intermediate Gray 17, right in the road that laying is completed in surface layer
It constructs as follows in any side half range road surface:
Step 1: cleaning 3 floating dust of surface layer in road, and keep top surface aggregate particle surface exposed, then use emulsified asphalt
Sprinkling wagon is according to 0.2~0.4L/m2Dosage emulsified asphalt is uniformly sprayed in surface layer 3 in the road, form first of emulsification and drip
Green face；Emulsified asphalt is PC-3 or PA-3 emulsified asphalt, if having at omission, carries out artificial mend and spreads；If there is accumulation, strikes off and have more
Part makes emulsified asphalt not form oil film or trickling on surface.
Step 2: on first of emulsified asphalt face, mat formation piecewise the mat that generates heat, and connecting cable along a direction, it is complete
At mating formation for target phase half range road surface fever mat 2.
Step 3: manually bail 12 is squeezed on longitudinal grizzly bar and tangential grizzly bar, by the fixed face in the road of fever mat 2
On layer 3；Since longitudinal grizzly bar of mat and tangential grizzly bar are in being staggered, so bail 12 is also in being staggered, bail covers
Lid range greatly improves, and can effectively enhance the contact strength of surface layer in mat structure and road.
Step 4: on fever mat 2, the track 13 of direction of traffic is parallel to using asphalt Manual two,
Asphalt is identical as the material of upper layer 1；Track 13 is spread according to the wheel spacing and tyre width of rubber tire paver
If the rubber tire paver in operation is to orbit；The thickness of track 13 is not less than the diameter of heating cable, to avoid glue
It takes turns paver and damages heating cable.
Step 5: being run on track 13 using emulsified asphalt sprinkling wagon, and according to 0.2~0.4L/m2Dosage for paving
3 two sprinkling emulsified asphalts of surface layer in road equipped with fever mat 2 form second emulsified asphalt face.This time master of sprinkling
Syllabus is sprayed to grid and cable peripheral region, since mat structure covers the emulsified asphalt sprayed for the first time,
So needing to carry out secondary sprinkling, to achieve the purpose that enhance mat structure and upper layer contact strength.Since mat structure is covered
The emulsified asphalt sprayed for the first time is covered, so mat upper surface and cable surface need secondary sprinkling emulsified asphalt, to reach
To the purpose of enhancing mat structure and upper layer contact strength.
Step 6: dumper 14 being pushed using rubber tire paver 15, and rubber tire paver 15 and dumper 14 are held in rail
It is run on road 13, using the conveying synchronous with dumper 14 of rubber tire paver 15 and the asphalt that paves, then to the pitch to pave
Mixture carries out compacting and forms upper layer 1；Compacting includes the first pressing successively carried out, multiple pressure and final pressure.
Both do not having acclive variation, rolled in the flat segments for yet not having angled variation along vehicle heading,
Gradually alternately from outer lateral road axis, each alternately stacked width that rolls is no less than 50cm；In superelevation section, along vehicle
Driving direction is rolled, gradually alternately from the outside of road superelevation lateral in superelevation, alternately stacked every time to roll width
Degree is no less than 50cm；The driving wheel of paver should be travelled from high to lower and be rolled on longitudinal ramp.This rolls mode
Heating cable can be effectively prevent to be subjected to displacement in construction, prevent mat structure and heating cable from being drawn in the construction process
It pulls, roll, generate the harm such as dislocation, influence construction quality.
For longitudinal ramp:
If the gradient in longitudinal ramp, less than 3%, after completing the paving of track, emulsified asphalt truck spreader, rubber tire pave
Machine and transport vehicle direct plunge into paving operation, and the speed for controlling rubber tire paver is 1~3m/min；
If the gradient in longitudinal ramp, first will using hand-held road roller after completing the paving of track in 3%-6%
Track compacting, then, emulsified asphalt truck spreader, rubber tire paver and transport vehicle put into paving operation, and control rubber tire paver
Speed be 3~5m/min.
First pressing is to preheat steel roller 16 first, then follows rubber tire paver to implement using steel roller 16 quiet
It crushes pressure 1~2 time.
Multiple pressure is to roll 1-2 by the travel speed static pressure no more than 2km/h using the pneumatic-tired rollers of 25t~30t first
Time, then pressed travel speed vibroroller cmpacting x times no more than 2km/h using vibrated roller.
The rolling layer x of vibrated roller is set as follows:
Expression formula such as formula (4): y=k-a × exp (- bx) (4) is established by indoor real experiment
Y is the upper surface of real-time detection acquisition layer Compaction of Asphalt Mixture, and k is the setting of upper layer Compaction of Asphalt Mixture
Value, k value are 96, kminInitial compactness when paving, k are completed for upper layermaxBe after vibrated roller rolls 18 times on
The compactness of surface layer, a and b are coefficient, and are had: a=k-kmin, b=(k-kmin)/k；
It is obtained through experiment:
Work as Sm1Or Sm2When less than 10%, a=21.78, b=0.17, then the compactness y reached according to setting1, utilize formula
(5) the rolling layer x for obtaining vibrated roller is calculated1:
y1=96-21.78 × exp (- 0.17x1) (5)
Work as Sm1Or Sm2When being 10%~14%, a=20.75, b=0.15, then the compactness y reached according to setting2, utilize
Formula (6) calculates the rolling layer x for obtaining vibrated roller2:
y2=96-20.75 × exp (- 0.15x2) (6)
Work as Sm1Or Sm2When being 15%~20%, a=20, b=0.13, then the compactness y reached according to setting3, utilize formula
(7) the rolling layer x for obtaining vibrated roller is calculated3:
y3=96-20 × exp (- 0.13x3) (7)。
Heating cable joined " foreign matter " in the embedded interlayer being equivalent in road of interlayer, when the asphalt on road surface
When just having reached compaction requirement, compactness requirement is not fully achieved for the part that cable is connected with asphalt, so
It must pressurize, the setting of rolling layer x realizes after pavement asphalt mixture reaches compactness in the present embodiment
Pressurization.
Claims (7)
1. fever mat is avenged with ice-melt in a kind of road, it is characterized in that: the fever mat (2) is mated formation in surface layer (3) in the road,
Being under surface layer (3) in the road roadbase (4) is road foundation (5), the fever under the roadbase (4)
It is road upper layer (1) on mat (2), the fever mat (2) is that heating cable (6) is laid on by road surface flat shape
It on the heat-insulated grid (7) being arranged, and is fixedly connected using cassette tape (11) with heat-insulated grid (7), constitutes prefabricated profiled whole structure
Part；The heat-insulated grid (7) is made of heat-barrier material, using heat-insulated grid (7) setting shape will generate heat mat (2) in advance be made as using
In the linear straight way mat in straight line road surface of mating formation, and the bend mat in fan ring in curved road surface of mating formation；
The straight way mat is to set heat-insulated grid to the heat-insulated grid of rectangle (7a), and heating cable is in the heat-insulated grid of rectangle (7a)
It is upper to arrange by equidistantly snakelike as the snakelike heating cable of straight way (6a)；The bend mat is by heat-insulated grid by curved road surface
Radian is set as the fan heat-insulated grid of ring (7b), and heating cable presses snakelike arrangement, also, adjacent two on the fan heat-insulated grid of ring (7b)
The distance between road heating cable is gradually big from the curve inner side of curved road surface towards bend outside, forms the fan ring by fan ring arrangement
Snakelike heating cable (6b)；
The heat-insulated grid of rectangle (7a) is made of heat-insulated grizzly bar, is arranged including rectangular shaped rim grizzly bar (8a), equidistant interval
Lateral grizzly bar (9a), and the longitudinal grizzly bar (10a) being connected between adjacent transverse grizzly bar；It is described transverse direction grizzly bar (9a) perpendicular to
Direction of traffic, the longitudinal direction grizzly bar (10a) are parallel to direction of traffic；Heating cable is in the rectangular shaped rim grizzly bar (8a) and phase
Mat formation to form the wide " u "-shaped region of oral area and bottom on adjacent twice transverse direction grizzly bar (9a)；It is in adjacent " u "-shaped region
Longitudinal grizzly bar (10a) be staggered on lateral position, direction of traffic is parallel to longitudinal characterize, with laterally characterize perpendicular to
Direction of traffic；
The heat-insulated grid of the fan ring (7b) is to be made of heat-insulated grizzly bar, including fan ring frame grizzly bar (8b), be uniformly distributed in penetrating shape
Radial grizzly bar (9b), and the tangential grizzly bar (10b) being connected between adjacent radial grizzly bar, heating cable is in fan ring frame grid
Mat formation to form the not wide " u "-shaped region in oral area and bottom on item (8b) and adjacent twice radial direction grizzly bar (9b)；The string
It is arranged to grizzly bar (10b) along the string direction of fan ring, is in the tangential grizzly bar (10b) in adjacent " u "-shaped region along fan ring
Radially position interlock.
2. fever mat is avenged with ice-melt in road according to claim 1, it is characterized in that:
Spacing a between adjacent transverse grizzly bar is set1Are as follows:
PxFor the linear heat generation rate of heating cable, unit W/m,
P is that the unit area of the straight way mat of setting is mated formation power, unit W/m2；
Meanwhile spacing a is limited by following requirement1Maximum value: according to local climate and environment temperature, P is taken as 300~500W/
m2, by PxIt is taken as 25~30W/m, obtains a by formula (1)1Maximum value be 0.05~0.1m；And spacing a is limited by following requirement1
Minimum value: take a1It is 2~8 times of heating cable diameter for half diameter of a circle D, D at cable folding, the diameter of heating cable takes
For 0.005~0.01m, then a1Minimum value be 0.01~0.08m；
Accordingly, a is set1Value be 0.05~0.08m.
3. fever mat is avenged with ice-melt in road according to claim 2, it is characterized in that:
The interlayer entire area occupancy S of straight way matm1It is characterized by formula (2):
In formula (2), A is the longitudinal length of the heat-insulated grid of rectangle (7a), and B is the lateral length of the heat-insulated grid of rectangle (7a), d1For square
The width of heat-insulated grizzly bar, takes n in the heat-insulated grid of shape (7a)1For the radical of longitudinal grizzly bar in each " u "-shaped region；
By d1It is taken as 0.006~0.01m, if n10 is taken, then is calculated according to formula (2) and obtains Sm1It is 9.3%~23%；It is obtained according to experiment
, as interlayer entire area occupancy Sm1When being 20%, layer stability is best；So taking n1Value formula (2) in interlayer
Entire area occupancy Sm1Value be 18~23%；
Bend mat, the interlayer entire area occupancy S of bend matm2It is characterized by formula (3):
In formula (3), a2For the spacing being between the adjacent twice radial direction grizzly bar in outer arc one end, C is the outer of the fan heat-insulated grid of ring (7b)
Arc arc length, D are the inner arc arc length for fanning the heat-insulated grid of ring (7b), R1For outer arc radius, R2For interior arc radius, θ is the fan heat-insulated grid of ring
The central angle of (7b), r=R1-R2, d2For the width of heat-insulated grizzly bar in the fan heat-insulated grid of ring (7b), n2For in each " u "-shaped region
Tangential grizzly bar radical；Take n2Value formula (3) in occupancy Sm2Value be 18~23%.
4. the construction method of fever mat is avenged on a kind of road described in claim 1 with ice-melt, it is characterized in that: by straight way mat and curved
Road mat is configured by half range width of roadway, in the road that laying is completed in surface layer (3), for any side half range road
It constructs as follows in face:
Step 1: cleaning surface layer (3) floating dust in road, and keep top surface aggregate particle surface exposed, then sprayed using emulsified asphalt
Vehicle is spilt according to 0.2~0.4L/m2Dosage emulsified asphalt is uniformly sprayed in surface layer (3) in the road, form first of emulsification and drip
Green face；
Step 2: on first of emulsified asphalt face, mat formation piecewise the mat that generates heat, and connecting cable along a direction, it is complete
At mating formation for target phase half range road surface fever mat (2)；
Step 3: manually being squeezed on longitudinal grizzly bar and tangential grizzly bar bail (12), by the fixed face in the road of fever mat (2)
On layer (3)；
Step 4: in fever mat (2), the track (13) of direction of traffic is parallel to using asphalt Manual two,
The asphalt is identical as the material of upper layer (1)；The track (13) is the wheel spacing and wheel according to rubber tire paver
Tire width is laid with, and the rubber tire paver in operation is run on track (13), and the thickness of track (13) is not less than fever
The diameter of cable damages heating cable to avoid rubber tire paver；
Step 5: being run on track (13) using emulsified asphalt sprinkling wagon, and according to 0.2~0.4L/m2Dosage for mating formation
There is the secondary sprinkling emulsified asphalt of surface layer (3) in the road of fever mat (2), forms second emulsified asphalt face；
Step 6: pushing dumper (14) using rubber tire paver (15), and rubber tire paver (15) and dumper (14) are kept
It is run on track (13), using rubber tire paver (15) conveying synchronous with dumper (14) and the asphalt that paves, then it is right
The asphalt to pave carries out compacting and forms road upper layer (1)；The compacting includes the first pressing successively carried out, multiple pressure and eventually
Pressure.
5. the construction method of fever mat is avenged on road according to claim 4 with ice-melt, it is characterized in that: on longitudinal ramp,
The asphalt of road upper layer (1) is paved and being compacted, is to carry out conveying by the direction from eminence toward lower, pave
And compacting.
6. the construction method of fever mat is avenged on road according to claim 5 with ice-melt, it is characterized in that: for longitudinal slope
Road:
If the gradient in longitudinal ramp is less than 3%, after completing the paving of track, emulsified asphalt truck spreader, rubber tire paver and
Transport vehicle direct plunges into paving operation, and the speed for controlling rubber tire paver is 1~3m/min；
If the gradient in longitudinal ramp is in 3%-6%, after completing the paving of track, first using hand-held road roller by track
Compacting, then, emulsified asphalt truck spreader, rubber tire paver and transport vehicle put into paving operation, and control the speed of rubber tire paver
Degree is 3~5m/min.
7. the construction method of fever mat is avenged with ice-melt according to claim 4,5 or 6 tunnels, it is characterized in that: in multiple pressure,
It is rolled 1-2 times using the pneumatic-tired rollers of 25t~30t by the travel speed static pressure no more than 2km/h, is then used first
Vibrated roller is pressed travel speed vibroroller cmpacting x times no more than 2km/h；
The rolling layer x of vibrated roller is set as follows:
Expression formula such as formula (4): y=k-a × exp (- bx) (4) is established by indoor real experiment
Y is the upper surface of real-time detection acquisition layer Compaction of Asphalt Mixture, and k is upper layer Compaction of Asphalt Mixture setting value, k
Value is 96, kminInitial compactness when paving, k are completed for upper layermaxIt is the upper layer after vibrated roller rolls 18 times
Compactness, a and b are coefficient, and are had: a=k-kmin, b=(k-kmin)/k
It is obtained through experiment:
Work as Sm1Or Sm2When less than 10%, a=21.78, b=0.17, then the compactness y reached according to setting1, counted using formula (5)
Calculate the rolling layer x for obtaining vibrated roller1:
y1=96-21.78 × exp (- 0.17x1) (5)
Work as Sm1Or Sm2When being 10%~14%, a=20.75, b=0.15, then the compactness y reached according to setting2, utilize formula
(6) the rolling layer x for obtaining vibrated roller is calculated2:
y2=96-20.75 × exp (- 0.15x2) (6)
Work as Sm1Or Sm2When being 15%~20%, a=20, b=0.13, then the compactness y reached according to setting3, counted using formula (7)
Calculate the rolling layer x for obtaining vibrated roller3:
y3=96-20 × exp (- 0.13x3) (7)；
Sm1For the interlayer entire area occupancy of straight way mat, Sm2For the interlayer entire area occupancy of bend mat.
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| JPH10147905A (en) * | 1996-11-20 | 1998-06-02 | Yukiguni Kagaku Kk | Work execution method for paved surface heating device |
| CN1737263A (en) * | 2004-08-19 | 2006-02-22 | 新日本制铁株式会社 | Snow melting panel |
| CN103114511A (en) * | 2013-02-06 | 2013-05-22 | 胡世秀 | Heat-preserving themogenesis road device |
| CN103821067A (en) * | 2014-03-05 | 2014-05-28 | 合肥工业大学 | Composite functional layer for melting snow and ice on bridge floor and construction method of composite functional layer |
| CN205115953U (en) * | 2015-10-30 | 2016-03-30 | 长安大学 | A device for pitch bridge deck pavement snow melt deicing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10147905A (en) * | 1996-11-20 | 1998-06-02 | Yukiguni Kagaku Kk | Work execution method for paved surface heating device |
| CN1737263A (en) * | 2004-08-19 | 2006-02-22 | 新日本制铁株式会社 | Snow melting panel |
| CN103114511A (en) * | 2013-02-06 | 2013-05-22 | 胡世秀 | Heat-preserving themogenesis road device |
| CN103821067A (en) * | 2014-03-05 | 2014-05-28 | 合肥工业大学 | Composite functional layer for melting snow and ice on bridge floor and construction method of composite functional layer |
| CN205115953U (en) * | 2015-10-30 | 2016-03-30 | 长安大学 | A device for pitch bridge deck pavement snow melt deicing |
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